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Planting calendar for ZIP 84513 (Castle Dale, UT)

When to plant vegetables in Castle Dale, UT (USDA hardiness zone 6a). Typical last spring frost around May 18, 2026 14 days year to year), first fall frost around Sep 27, 202610 days).

Playing it safe? Spring frost holds off until about Jun 4, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Castle Dale, UT planting calendar for dates typical of the whole city.

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Month by month in Castle Dale, UT

February

March

April

May

June

July

August

Understand your frost dates

Frost dates for ZIP 84513: NOAA 1991-2020 normals (USC00421214 CASTLE DALE, UT US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.